*{
    margin: 0;padding: 0;
}
.body{
width: 1903px;

margin-left: auto;
margin-right: auto;

}
.nav{
    height: 880px;
    width: 1903px;
    position: relative;
}
.nav-img, .nav-img img{
    position: absolute;
    left: 0;
    top: 30px;
}
.nav-img{
    width: 100%;
    height: 100%;
}
.nav-img img{
    height: 880px;
     width: 1903px; 
}
.nav-img img:first-child{
    z-index: 100;
}
.nav button{
    border: none;
    width: 64px;
    height: 64px;
    position: absolute;
    top: 400px;
    transform: translateY(-50%);
    z-index: 101;
}
#prev{
    background: url("../images/prev.png");
    left: 0;
}
#next{
    background: url("../images/next.png");
    right: 0;
}
#prev,#next:hover{
    cursor: pointer;
}

.nav-wrap{
    width: 300px;
    height: 300px;
    position: absolute;
    top: 300px;
    left: 50%;
    margin-left: -100px;
    z-index: 109;
    
    
}
.nav-wrap img{
    z-index: 105;
    width: 150px;
    height: 150px;
    border-radius: 50%;
}
.nav-wrap h3,h4{ 
    position: absolute;
    color: black;
    font-size: 40px;
    color: cornsilk;
    font-weight: 100;
    font-style: italic;
}
.nav-wrap h3{
    top: 180px;
    left: 0px;
}
.nav-wrap h4{
    top: 225px;
    left: -40px;
}
.head{
    height: 60px;
    width: 1903px;
    position: fixed;
    top: 0;
    background-color: rgba(0, 72, 78, 0.733);
    z-index: 105;
}
.well{
    text-decoration: none;
    color: #fff;
    line-height: 60px;
    position: absolute;
    left: 40px;
}

.a{
   position: absolute;
   right: 40px;
}

/*菜单的标题区域 宽度200px 符合总体宽度 设置行高 和字体居中*/
.b{
  /*margin:0px auto;*/
  width:100px;
  height:60px;
  background-color:rgba(0, 72, 78, 0.733);
  color: white;
  text-align: center;
  line-height: 50px;
  font-weight: bold;
}

/*下拉子菜单的盒子 宽度200px 和整体一样 */
/*!!!display:none 是重点 用来隐藏这块内容*/
/*对该块经行绝对定位使其脱离文档流 以至于不影响菜单下的内容*/
.c{
  width:100px;
  background-color: rgba(0, 72, 78, 0.733);
  display: none;
  position: absolute;
  left: 0;
  height: 250px;
}
/*每个子菜单的设置 位置自适应 一像素的下边距  四边10像素的内边距*/
.c li{
  height: 50px;
  margin-top: 10px;
  text-align: center;
  margin-bottom: 1px;
  list-style: none;
  z-index: 200;
}
.c li:hover{
  background-color:rgba(0, 0, 255,0.2);
}
/*重点！！！ 鼠标接触菜单任何区域 保持子菜单显示状态*/
.a:hover .c{
display: block;
}
/*鼠标接触整个菜单区域 标题背景保持改变背景颜色*/
.a:hover .b{
background-color: #ED4E6E;

}
/*鼠标经过子菜单项的时候 鼠标改变事件（其实加了a标签链接可以不放这个）*/
.a:hover .c li{
cursor: pointer;
}
.c ul li a{
display:inline-block;
width: 100%;
height: 100%;
text-decoration: none;
color: white;
text-align: center;
}

.main{
    width: 1903px;
    margin-top: 70px;
    /* height: 1000px; */
}
.main-head{
    overflow: hidden;
    height: 320px;
    background-color: rgba(85, 127, 131, 0.233);
}
.main-head div{
    height: 250px;
    width: 400px;
    float: left;
    border: 2px solid #fff;
    margin-top: 30px;
}
.main-head div:hover{
    width: 410px;
    height: 260px;
}
.main-head div:first-child{
    margin-left: 106px;
}
.main-head div:not(:first-child){
    margin-left: 30px;
}
.main-head div img{
    width: 400px;
    height: 250px;
}
.main-head div img:hover{
    width: 410px;
    height: 260px;
}
.ziji{
    height: 650px;
    background-color: rgba(110, 137, 139, 0.233);
    overflow: hidden;
    position: relative;
}
.ziji img{
    width: 400px;
    height: 400px;
    border: 5px solid #fff;
    float: left;
    position: absolute;
    top: 100px;
    right: 380px;
}
.ziji h3,.lvxing h3,.life h3,.xuexi h3{
    width: 100px;
    height: 50px;
    background-color: rgba(85, 127, 131, 0.233);
    color: white;
    line-height: 50px;
    position: absolute;
    top: 0;
    left: 40px;
    text-align: center;
}
.ziji div{
    position:absolute;
    top: 150px;
    left: 400px;
}
.ziji div p{
    font-size: 25px;
    font-family: fantasy;
    margin-top: 10px;
    color: rgba(0, 72, 78, 0.733);
}
.ziji div span{
    display: block;
    font-size: 40px;
    margin-top: 80px;
    color: rgba(0, 72, 78, 0.733);
}
.lvxing{
    height: 650px;
    background-color: rgba(110, 137, 139, 0.233);
    overflow: hidden;
    position: relative;
}
.lvxing-center{
    position: absolute;
    top: 180px;
    left: 50%;
    margin-left: -140px;
}
.lvxing-center ul li{
    margin-top: 10px;
}
.lvxing-center ul li a{
    font-size: 20px;
    color: rgba(0, 72, 78, 0.733);
    text-decoration: none;
}
.lvxing-center ul li a:hover{
    color:  darkkhaki;
    cursor: pointer;
}
.box-left{
    width:300px;
    height:450px;           
    border:3px solid #fff;
    position:absolute;
    left: 250px;
    top: 120px;
}
.box-right{
    width: 300px;
    height: 450px;
    border: 3px solid #fff;
    position: absolute;
    right: 250px;
    top: 120px;
}
.box-left img,.box-right img{
    width: 300px;
    height: 450px;
    position:absolute;
    left:0px;
    top: 0px; 
    text-outline: 50px;;
    transform:perspective(800px) rotateY(0deg);
    transition:all 500ms ease;
    backface-visibility:hidden;
}       
.box-left:hover img,.box-right:hover img{
    transform:rotateY(180deg);
}
.box-left .back{
    width:300px;
    height:450px;
    background: url("../images/neimeng\(2\).jpg") no-repeat;
    background-size: 100% 100%;
    text-align:center;
    line-height:100px;
    transform:rotateY(-180deg);
    transition:all 500ms ease;
    backface-visibility:hidden;
}
.box-right .back{
    width:300px;
    height:450px;
    background: url("../images/guangzhou1\ \(4\).jpg") no-repeat;
    background-size: 100% 100%;
    text-align:center;
    line-height:100px;
    transform:rotateY(-180deg);
    transition:all 500ms ease;
    backface-visibility:hidden;
}
.box-left:hover .back,.box-right:hover .back{
    transform:rotateY(0deg);
}
.life{
    height: 650px;
    background-color: rgba(110, 137, 139, 0.233);
    overflow: hidden;
    position: relative;
}
		/*最外层容器样式*/
		.wrap {
			width: 350px;
			height: 350px;
            margin-left: 755px;
            margin-top: 200px;
			position: relative;
		}

		/*包裹所有容器样式*/
		.cube {
			width: 200px;
			height: 200px;
			margin: 0 auto;
			transform-style: preserve-3d;
			transform: rotateX(-30deg) rotateY(-80deg);
			animation: rotate linear 20s infinite;
		}

		@-webkit-keyframes rotate {
			from {
				transform: rotateX(0deg) rotateY(0deg);
			}
			to {
				transform: rotateX(360deg) rotateY(360deg);
			}
		}

		.cube div {
			position: absolute;
			width: 200px;
			height: 200px;
			opacity: 0.8;
			transition: all .4s;
		}

		/*定义所有图片样式*/
		.pic {
			width: 200px;
			height: 200px;
		}

		.cube .out_front {
			transform: rotateY(0deg) translateZ(100px);
		}

		.cube .out_back {
			transform: translateZ(-100px) rotateY(180deg);
		}

		.cube .out_left {
			transform: rotateY(-90deg) translateZ(100px);
		}

		.cube .out_right {
			transform: rotateY(90deg) translateZ(100px);
		}

		.cube .out_top {
			transform: rotateX(90deg) translateZ(100px);
		}

		.cube .out_bottom {
			transform: rotateX(-90deg) translateZ(100px);
		}

		/*定义小正方体样式*/
		.cube span {
			display: block;
			width: 100px;
			height: 100px;
			position: absolute;
			top: 50px;
			left: 50px;
		}

		.cube .in_pic {
			width: 100px;
			height: 100px;
		}

		.cube .in_front {
			transform: rotateY(0deg) translateZ(50px);
		}

		.cube .in_back {
			transform: translateZ(-50px) rotateY(180deg);
		}

		.cube .in_left {
			transform: rotateY(-90deg) translateZ(50px);
		}

		.cube .in_right {
			transform: rotateY(90deg) translateZ(50px);
		}

		.cube .in_top {
			transform: rotateX(90deg) translateZ(50px);
		}

		.cube .in_bottom {
			transform: rotateX(-90deg) translateZ(50px);
		}

		/*鼠标移入后样式*/
		.cube:hover .out_front {
			transform: rotateY(0deg) translateZ(200px);
		}

		.cube:hover .out_back {
			transform: translateZ(-200px) rotateY(180deg);
		}

		.cube:hover .out_left {
			transform: rotateY(-90deg) translateZ(200px);
		}

		.cube:hover .out_right {
			transform: rotateY(90deg) translateZ(200px);
		}

		.cube:hover .out_top {
			transform: rotateX(90deg) translateZ(200px);
		}

		.cube:hover .out_bottom {
			transform: rotateX(-90deg) translateZ(200px);
        }
        .life-left,.life-right{
            width: 30px;
            position: relative;
            
        }
        .life-left p,.life-right p{
            font-size: 50px;
            font-weight: bold;
            color: rgba(0, 72, 78, 0.733);
        }
        .life-left{
            left: 400px;
            top: -400px;
            float: left;
        }
        .life-right{
            right: 400px;
            top: -400px;
            float: right;
        }
        .xuexi{
            height: 600px;
            background-color: rgba(110, 137, 139, 0.233);
            overflow: hidden;
            position: relative;
        }
        .lianxi{
            width: 300px;
            height: 300px;
            border: 1px solidrgb(255, 255, 255);
            float: left;
            position: absolute;
            top: 100px;
            left: 400px;
        }
        .lianxi img{
            width: 300px;
            height: 300px;
        }
        .message{
            position: absolute;
            top: 150px;
            left: 800px;
        }
        .group input{
            width: 300px;
            height: 30px;
            border: teal;
        }
        .group {
            margin-top: 10px;
        }
        .group textarea{
            width: 300px;
            height: 50px;
            border: teal;
        }
        #sendMessage{
            height: 30px;
            width: 300px;
            background-color:rgba(110, 137, 139, 0.233);
            border: none;
            color: rgba(0, 72, 78, 0.733);
        }
        .bottom{
            position: absolute;
            left: 50%;
            bottom: 5px;
            margin-left: -80px;
        }
        .bottom p{
            color: #666;
            font-size: x-small;

        }